public static Task <ElasticsearchResponse <DynamicDictionary> > IndicesExistsAliasAsync(
            this IElasticsearchClient client, string index, IndicesExistsAliasSelector requestParameters)
        {
            var selector = Obsolete.UpCastSelector <IndicesExistsAliasRequestParameters, AliasExistsRequestParameters>(requestParameters);

            return(client.IndicesExistsAliasAsync(index, selector));
        }
        public static ElasticsearchResponse <T> IndicesExistsAlias <T>(
            this IElasticsearchClient client, string index, IndicesExistsAliasSelector requestParameters)
        {
            var selector = Obsolete.UpCastSelector <IndicesExistsAliasRequestParameters, AliasExistsRequestParameters>(requestParameters);

            return(client.IndicesExistsAlias <T>(index, selector));
        }